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Dermatofibroma looks dermoscopically different on trunk versus extremities.
Gabriella Brancaccio1, Tonia Nuzzo2, Rosa DI Maio2
1Dermatology Unit, Second University of Naples, Naples, Italy - gabri.brancaccio@gmail.com.
Dermatofibroma (DF) dermoscopic patterns vary by body location. Extremities show a "classic" network and patch pattern, while trunk DFs present different findings, impacting diagnosis.
Area of Science:
- Dermatology
- Dermoscopy
- Pathology
Background:
- Dermatofibroma (DF) exhibits diverse dermoscopic patterns.
- Limited data exists on how DF morphology varies with anatomic location.
Purpose of the Study:
- To investigate the association between dermoscopic patterns of dermatofibroma (DF) and their anatomic location.
Main Methods:
- Retrospective observational study of 169 DFs.
- Dermoscopic structures and patterns were analyzed.
- Lesions categorized by location (extremities vs. trunk) and analyzed for correlations using statistical tests.
Main Results:
- DFs predominantly found on extremities (79.2%) versus trunk (20.7%).
- Significant association found between network and patch pattern and extremities (P<0.05).
- Trunk DFs frequently showed total structureless pattern (31.4%), while extremities showed structureless and patch pattern (11.9%).
Conclusions:
- Dermoscopic pattern of DF is significantly influenced by anatomic site.
- Extremity DFs often display a "classic" pattern (white patch with network).
- Trunk DFs tend to exhibit distinct dermoscopic features compared to extremity DFs.
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